The main component of Pyrex glass is_____________________?
The main component of Pyrex glass is_____________________?
		A. Zinc
B. Lead
C. Boron
D. Selenium
		A. Zinc
B. Lead
C. Boron
D. Selenium
		A. V2O5
B. Pt
C. Ni
D. Cr
		A. CaCO3
B. ZnO
C. Al2O3
D. Fe
		A. Reduced softening capacity of zeolite
B. Increased dosage of chlorine to provide a disinfecting residual in the water
C. Easy removal of its hardness
D. None of these
		A. Sintering
B. Annealing
C. Shag or forming
D. Melting
		A. 0.14
B. 0.34
C. 0.94
D. 1.4
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.